taylor



c. w. TAYLOR,

BRAKE MECHANISM FOR DIFFERENTIALS.

APPUCATION FILED ocr. 10.1917. RENEWED sEPT.25, 1919.

2 ZSHEETS-SHEET]. .ijggrj I y! I M h A} 7 E I l/ ll) 1/ 10 I Inaf 277116 L 5 3 I Patented Dec. 16,1919.

C. W. TAYLOR.

BRAKE MECHANISM FOR DIFFEBENTIALS. APPLICATION FILED OCT. 10, l9l7. RENEWEDSEPLZS, 1919.

1,324,860. Patented Dec. 16, 1919.

Z SHEETS SHEET 2.

-ment are:

First, to provide a oonstructlonfwhereby I dlflerentlal mechanism'is employe ,fdllowingais a sfiecificatiomg MM-IIIVQDtIOIIJ'GlatBS to lmprovements 1n "UNITED STATES PATENT OFFICE.

CLARENCE w. TAYLOR, or CHICAGO, ILLINOIS. ASYSIGNOR r ONLAKE COMPANY, or CHIGAGO,--ILLINOIS, A CORPORATION or ILLINOIS.

BRAKE MECHANISM FOR DIFFERENTIALS.

Patented Dec. 16, 1919.

Application filed October 10, 1917, Serial a. 195,671. Renewed September 25, 1919. Serial No. 326,385.'

To all whom it may concern: y

Beit known that I, Gil-merger; W. TAYLoR,

a citizen of the United States of America,

residing at Chicago, int-he county .of Cook and Stateof lllinois, have invented certain new aandzilseful Improvements --in Brake .Mechanism :101 Dilfeientials, of which differential mechanism, particularlyof the beveltype, and the objects of my improveto oppose and prevent fspimfing of either vehlcle wheel on a slippery orsoft road sur-' face and the well known loss-of power, t ire injury and other objectionable results; 1

Second, to improve the bevel gear type of compensating devicesby the addition of; simple andeifective: artsgwhich render the) rear axle a solid ax e on a straight ahead drive and permit differential movement in turning a corner ,-band Third,, to afford: rake members having relatively large friction contact 'with'the respective driven members on the adjacent ends of the divided shaft and less friction surface in contact with the spider-or rotatable housing or driver-to'facilitate relative rotative movement of said bevel gears.

With the above and other objects in view,

my invention consists in they novel features and in the novel combination and. arrangement of parts hereinafter fully described, illustrated in the accompanying drawings formin a part of this specification, and particular y pointed out in the claims hereunto appended; it being understood that changes,

variations and modifications in thedetailsj of the invention within the scope of the. claims, may be resorted toWithOut-departing from the spirit or sacrificingany ot the advantages thereof.

In the drawings,

Figure 1 is a longitudinal horizontal sec- Fig. 4 is a plan view of the bevel gears, spider and pinions with both brake members assembled together,

Similar numerals and letters refer to similar parts throughout the several views.

One embodiment of 'my invention will now be described] axle of a motor vehicle preferably withfthe .ordmary' bevel gear type, of differential mechanism and shaft drive. It -may be stated inthe case of a chain drive a divided jack s'haft'with a rotatable housin' for the ably an anti-friction ring 11 is mounted on each trunnion between the pinion and the rotatable housing or power imparting member 12, which is composed of two halves, one of which has an external annular flange 13 f -My improvement is assembled in a rear.

with the master gear 14 fixed thereto at 15.

The bevel pinion 16 is in mesh with the gear 14. The non-rotatable housing 17 affords the usual .bearings 18, 19, for the rotatable housing 12.- The bevel gear wheels 5 each preferably are formed with an external annular flange or brake surface 20 which has an annular inner friction face 21, thus providing a relatively large friction area for brake purposes. "The -separate annular brake memv bers A and B preferably are made of cast steel and hardened but may be of any desired metal or-substance. These brake members are alike in construction and a descrip- .60 with my brake members assembled-together,

brake members, and

tion of one is a description of both. Prefer-- 4 ably each" is cylindrical and tapering out- Wardly toward one end Where there is 10( formed an annular friction area 22f0rfrictiOnal engagement with the annular friction face 21 of the bevel gears 5 with which it p is in frictional contact. The inner end of .tion of a rear axle of an automobile with my improvement incorporated therewith;

Fig. 2 is a perspective view of the driven members or bevel gears; pinions and spider Fig.1;3' is aperspectiveview off-one of the may limit travel relative to the brake memhers A and B. The end wall surface 2% of each brake member preferably is a snug fit against the outer face of the anti-friction ring 11,01 it no friction ring is employed then against the trunnion or driver. It is apparent the degree of brake effort exerted between the friction surfaces or faces 21,

depends somewhat upon how tight the membcrs'A and B are put into place, and the extent of the friction surface.

Also it is ob vious that relatively there is a smaller de- I gree of friction exerted between the wall 7 surface A and the anti-friction ring 11 by either'of thebrake members A and B. In the -.event ly two trunmons of the spider or driver are used, it will readily appear thatt'heelongatedopening will be longer; and stiquently the slipping vehicle wheel could spin nearly half turn before being prevented by th' iake member colliding wit the spider theshorter distance tef riu fore be ngj tarrested,

\s nI- wmmon practice l-the fre ends of" thetrunni'oiis are disposed in recesses in the oplmsingsurfaces of-the two-halves of the rotatable housingl2 and the two halves are suitably secured together by bolts or otherwise. .4 g

In construction-and operation, the'pro ections 2am not able to interfere witheach other "in relative movement because any in ward movement of either member A or B is limited hy the trun'nions or the anti-friction rings 11.' The frictional contact of A or B with its bevel gear 5 will prevent spinning of the vehicle wheel attached tothe shaft of the bevel gearwheel 5 beyond the dis tance permitted by the opening C. Thtr men-fliers A and 'B areoperated by the rela-, tive movement of the bevel gear wheels 5.

The projections 23 cannot pass the trun n'ions 10 because the] projectinto the math of travel of the trunnions. The opposing walls 24 areparallel \vitlneaeh other and normally throughout the length of the openin; 6 the same degree of friction is exerted.

The driving member comprises thespider and its trnnniohs and the rotatable housing.

The brake members ma v lie-in contact with. either or both as ma v be desired without departing from the spirit of my invention.

An important feature of'nrv lmproven'lent is the provision of mechanism in constant vnfltfilt'twith the bevel gears 5,5, to oppose and prevent. grinning of 'either driving vehicle wheel and to limit relative rotative ...-th trunnion or driver. The more movement of the two bevel gears 5. The brake member A is in contact on one side with the bevel gear wheel 5 and with the driver on the other side, the member B being in contact with its bevel gear wheel 5 on1 one side and with the driver on'the other 51(0.

I do not limit my invention to the construction shown and describedwhen in the inner and opposing edges of the meinders A and B are made to contact with the trunnions 10 for the reason it will readily appear that bosses or recesses at intervals on or in the inner wall of each half of the rotatable housing 12 will serve the same purpose as the construction herein set forth.

In turning a. cornerfthelinner ivehicl wheel and, its bevel gearf frequentlyg-f afe caused to have a movement rearwardly relative to the outside vehiclewheel and the brake member in contact'w'ith'; the inner bevel gear has a corresponding hackward "movement with ts bevel-gear relative to the driver."-"--"T i It is desirable to provide for possiblesli page between the friction fa s of thebra members and t-he' bevel gearsfbefore could be done by dragging to the tread su face of the tire of eithelglx ehicle drive wheel,

hort tu thecan By thus showing-and s 4 cifically.-describing one embodiment of mypresent invention I do' not intend to r'estrictithe range of 100.

equivalents not rendered neressar}- by the prior state of this art.

Having thus fullv described my inven tion, what I clain'r asmew, and desire to secure bfv Letters-Patent, 1s-- 1. In 'brake mechanism for-'di-fi'erent-lals,

the combination with a divided shaft-and differential gearing including a driver and bevel gears having annular brake surfaces connecting the adjarent ends of the divided shaft, of a plurality of annular-brake memhers, having inwardly extending projections and in contact on one end with said'driver vaudio contact on the other-ends'with said bevel gear respectively to limit relative rotative movement of said bevel 'geaisi the combination with a divided shaft and bevel gears having annular brake surfaces fixed to the adjacent ends of the dividedshaft, and a driver, of a plurality of annular brake members having inwardly extending.

projections and in contact at one endwith said driver and n contact on the other ends with said respective bevel gears to limit rel ative rotatlve movement of said bevel gears;-

FIG

brake members having inwardly extending projections and in frictional contact at one end with said spider and in frictional contact on the other ends with said respective bevel gears.

4. in brake ntechanism for differentials, the combination with a divided shaft and bevel gears having annular brake surfaces fixed to the adjacent ends of the divided shaft and a spider including radial trunnions carrying rotatably mounted bevel pinions in mesh with both of the bevel gears, of a plurality of annular brake members having inwardly extending projections and in frictional contact at one end with said trunnions and in frictional contact on the other ends with the respective bevel gears.

5. In lnake mechanism for differentials, the combination with a divided shaft and bevel gears having annular brake surfaces fixed to the adjacent ends of the divided shaft-and a spider including radial trunnions carrying rotatably mounted bevel pinions in mesh with both of said bevel gears and a rotatable housing in operative engagement with the trunnions, of a plurality of annular brake members having inwardly extcnding projections and in frictional contact at one end with said trunnions and in Frictional contact on the other ends with said respective bevel gears.

ll. In brake mechanism for dilierentials, the combination with a divided shaft and bevel gears having annular brake surfaces lixcd to the adjacent ends of the divided shaft and a spider including radial trunnions carrying rotatably mounted bevel pinions in mesh with both of the bevel gears and anti-friction rings, of a plurality of annular brake members having inwardly ex tending projections and in frictional contact at one end with the anti-friction rings and in frictional contact on the other ends with said respective bevel gears.

T. in brake mechanism. for diiierentials, the combination with a divided shaft and bevel gears having annular brake surfaces fixed to the adjacent ends of the divided shaft and a spider including radial trun nions carrying rotatably mounted bevel pinions in mesh with both of said bevel gears and a rotatable housing in operative engagement with the trunnions and anti-friction rings on the trunnions, of a plurality of annular brake members having inwardly extending projections and in frictional contact at one end with the anti-friction rings and in frictional contact at the other ends with said bevel gears respectively.

8. in brake mechanism for dill'erentials, llln combination with. a plurality of bevel gears having annular bra (e surfaces and a driver disposed between the bevel gears, of a plurality of annular brake members formed with elongated openings therebeill tween to permit limited rotativc movement of the driver with respect to the brake mom-i bers.

. 9. In brake mechanism for difi'erentials. the combination with a )lurality of bevel gears having annular bralre surfaces and a driver disposed between the bevel gears and carrying rotatably mounted bevel pinions in mesh with both of said bevel gears, of a plurality of annular brake members formed with elongated openings therebetween to permit limited rotative movement or the driver with respect to the brake members.

10. In brake mechanism for differentials bl16 (201'11bl11tl3l011 with a divided shaft and bevel gears having annular brake surfaces fixed to the adjacent ends of the divided shaft and a spider including radial trunnions carrying rotatably mounted bevel pinions in mesh with both of the bevel gears, of a plurality of annular brake members formed with elongated openings therebetween to permit limited rotative movement of the spider with respect to the brake members.

11. In brake mechanism for differentials. the combination with a plurality of bevel gears each having an external annular flange with a brake surface thereon and a driver disposed between the bevel gears, of a plurality of annular brake members in contact with the bevel ge'ar brake surfaces and the driver and formed with elongated openings therebetween to permit limited rotative movement of the driver with respect to the brake members.

12. In brake mechanism for differentials, the combination with a divided shaft and bevel gears each having an external annular flange formed with an annular brake surface thereon fixed to the adjacent-ends of the divided shaft and a driver including trun nions carrying rotatably mounted bevel pinions in mesh with both of said bevel gears, of a plurality oi? annular brake members in contact with the bevel gear brake surfaces and the-driver and formed with elongated openings thcrcbetwccn to 'g'Jei-mit limits l rotat-ive movement of the driver with respect to the brake members.

13. In brake mechanism for diilerentials, the combination with a divided shaft and bevel gears each having an external annular flange formed with a brake surfaco'thcrcon fixed to the adjacent ends of the divided shaft and a driver including 'adial trunnions carrying rotatably mounted bevel pinions in mesh with both of the bevel gears and anti-friction rings of a plurality of annular brake members in contact with the bevel gear brake surfaces and the driver and formed with elongated openings therebctween to permit limited rotative H'lOVQYl'lOYll] of the driver with respect to the brake members.

14;. In brake mechanism for differentials of the class deecribed, the combination with. a divided shaft and difi erential gearing including a driver connecting the adjacent ends of the divided shaft, a plurality of annular brake i'nenibers disposed between the gears on the adjacent ends of the divided shaft and the driver and formed with elongated openings between said hmke members to oppose and limit relative rota- 10 "sive movement of the driven menii'iers in either direction.

In testimony whereof I zifhx my signature in the presence of a Witness.

- CLARENCE W. TAYLOR.

W i tness Seer: M. HQGAN, 

